Sony's screwed themselves over with protection too... They released a Celine Dion CD that crashed conmputers and was unplayable even in some of their own drives...
CDA and MP3 on a CD is a bad idea for copy protection... it's just a rip-able as a regular CD, and would raise cost of production just a tad for the time spend getting the music into MP3 format (no label is dumb enough to record in it initially)
on a side, if you want to get you music fix even if you drive won't read it, you can get a nice little program to extract the CD image and mount it with a drive-image tool... It doesn't bypass the cd-protection because you're accessing the drive using normal means, just not reading it as an audio CD (most extractors do a byte-for-byte read) I like alcohol 120% and daemon tools